Utility of three-dimensional computed tomography for anatomical assistance in endoscopic endonasal transsphenoidal surgery

2015 ◽  
Vol 38 (3) ◽  
pp. 559-565 ◽  
Author(s):  
Akihiro Inoue ◽  
Takanori Ohnishi ◽  
Shohei Kohno ◽  
Hironobu Harada ◽  
Masahiro Nishikawa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Transsphenoidal Surgery ◽  
Three Dimensional ◽  
Endoscopic Endonasal ◽  
Endoscopic Endonasal Transsphenoidal Surgery

scholarly journals Application of 3D printed model for planning the endoscopic endonasal transsphenoidal surgery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xing Huang ◽  
Ni Fan ◽  
Hai-jun Wang ◽  
Yan Zhou ◽  
Xudong Li ◽  
...  
Keyword(s):  
3D Printing ◽  
Skull Base ◽  
Transsphenoidal Surgery ◽  
Three Dimensional ◽  
Spatial Relationship ◽  
Cranial Computed Tomography ◽  
Imaging Data ◽  
Endoscopic Endonasal ◽  
Endoscopic Endonasal Transsphenoidal Surgery

AbstractThe application of 3D printing in planning endoscopic endonasal transsphenoidal surgery is illustrated based on the analysis of patients with intracranial skull base diseases who received treatment in our department. Cranial computed tomography/magnetic resonance imaging data are attained preoperatively, and three-dimensional reconstruction is performed using MIMICS (Materialise, Leuven, Belgium). Models of intracranial skull base diseases are printed using a 3D printer before surgery. The models clearly demonstrate the morphologies of the intracranial skull base diseases and the spatial relationship with adjacent large vessels and bones. The printing time of each model is 12.52–15.32 h, and the cost ranges from 900 to 1500 RMB. The operative approach was planned in vitro, and patients recovered postoperatively well without severe complications or death. In a questionnaire about the application of 3D printing, experienced neurosurgeons achieved scores of 7.8–8.8 out of 10, while unexperienced neurosurgeons achieved scores of 9.2–9.8. Resection of intracranial skull base lesions is demonstrated to be well assisted by 3D printing technique, which has great potential in disclosing adjacent anatomical relationships and providing the required help to clinical doctors in preoperative planning.

scholarly journals Clinical utility of three-dimensional magnetic resonance imaging using a zero-echo-time sequence in endoscopic endonasal transsphenoidal surgery

2019 ◽  
Author(s):  
Akihiro Inoue ◽  
Shohei Kohno ◽  
Naoya Nishida ◽  
Satoshi Suehiro ◽  
Shirabe Matsumoto ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Pituitary Tumor ◽  
Transsphenoidal Surgery ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
3D Mri ◽  
Endoscopic Endonasal ◽  
Endoscopic Endonasal Transsphenoidal Surgery ◽  
Echo Time ◽  
Sellar Floor

Abstract Background: Recognizing the anatomical orientation surrounding the sellar floor is crucial in endoscopic endonasal transsphenoidal surgery (ETSS). Zero-echo-time (ZTE) sequences were recently suggested for a new bone identification technique on magnetic resonance imaging (MRI). This study aimed to evaluate the clinical usefulness of three-dimensional (3D)-ZTE-based MRI models in providing anatomical guidance for ETSS.Methods: ZTE-based MRI and magnetic resonance angiography (MRA) data from 15 consecutive patients with pituitary tumor treated between September 2018 and May 2019 were used to create 3D-MRI models. From these, the architecture surrounding the sellar floor, particularly anatomical relationships between tumors and internal carotid arteries (ICAs), was visualized to preoperatively plan surgical procedures. In addition, 3D-ZTE-based MRI models were compared to actual surgical views during ETSS to evaluate model applicability.Results: These 3D-ZTE-based MRI models clearly demonstrated the morphology of the sellar floor and matched well with intraoperative views, including pituitary tumor, by successively eliminating sphenoidal structures. The models also permitted determination of the maximum marginal line of the opening of the sellar floor by presenting vital structures such as ICAs and tumors. With such 3D-MRI models, the surgeon could access the intracranial area through the sellar floor more safely, and resect the pituitary tumor maximally without complications. Conclusions: Our 3D-MRI models based on ZTE sequences allowed distinct visualization of vital structures and pituitary tumor around the sellar floor. This new method using 3D-ZTE-based MRI models showed low invasiveness for patients and was useful in preoperative planning for ETSS, facilitating maximum tumor resection without complications.

Calvian Endo-pen: New Coagulation Forceps for Endoscopic Endonasal Transsphenoidal Surgery

2018 ◽  
Vol 79 (06) ◽  
pp. 524-527
Author(s):  
Steffen Rosahl ◽  
Geralf Kellner ◽  
Rüdiger Gerlach
Keyword(s):  
Skull Base ◽  
Transsphenoidal Surgery ◽  
Endoscopic Endonasal ◽  
Small Vessels ◽  
The Past ◽  
Bipolar Electrocoagulation ◽  
New Type ◽  
Endoscopic Endonasal Transsphenoidal Surgery ◽  
Skull Base Lesions ◽  
Anatomical Area

Objective Over the past few years bipolar electrocoagulation techniques in neurosurgery have been continually improving. However, limited access during endoscopic endonasal transsphenoidal surgery (EETS) for central skull base pathologies and the requirement of very precise coagulation in that dedicated anatomical area requires further refinement of bipolar coagulation instruments. We describe our experience (effectiveness of coagulation, intraoperative handling, and the use as a dissecting tool) with a new type of coagulation forceps, the Calvian endo-pen (Sutter Medizintechnik, Freiburg, Germany) during EETS. Method From June to August 2015, 12 patients with central skull base lesions (9 with a pituitary adenoma and 1 each with epidermoid, hemangioma, and juvenile angiofibroma) were operated on with the Calvian endo-pen. Results The application of the Calvian endo-pen was feasible in all cases. The angled thin tips proved to be very effective and precise for soft tissue coagulation to achieve hemostasis. Even very small vessels could be occluded selectively. It was also helpful for outward dissection in separating normal from tumor tissue. Conclusion The use of the Calvian endo-pen is safe and effective during EETS for central skull base pathologies. Its ease in intraoperative handling (maneuverability, cleaning) and precise coagulation makes it a promising instrument for EETS.

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